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Useful and Harmful Microbes — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceUseful and Harmful Microbes1 Mark
Question
Lactobacilli bacteria are used for making yoghurt.
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Answer

The lactobacilli convert lactose, the sugar in the milk, into lactic acid. As a result, the pH of milk decreases causing a coagulation of milk proteins. Milk changes into yogurt.

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